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‎02-19-2026 10:44 AM

HP Recommended

This error code popped up and I cannot access the screen.  I was printing multiple copies of a large scale print and partway through it said it could not detect the paper.

1 REPLY 1

‎02-21-2026 11:17 AM

HP Recommended

Hi @KarenGSLD,

 

Welcome to the HP Support Community.

 

Thank you for posting your query.

 

I'm sorry, but I couldn't find any specific information regarding the error code B8377158 for the HP DesignJet T120 printer. I would request you to please follow the steps:

 

Power Reset.

  • Turn off the printer.
  • Unplug the power cord for at least 2 minutes.
  • Plug back in and restart.

Paper Path.

  • Remove all paper from the tray and roll feed.
  • Inspect for jams or misfeeds even small scraps can trigger “cannot detect paper.”
  • Reload paper carefully and ensure sensors are clean.

Firmware Update.

  • Connect the printer via USB or Ethernet.
  • Download the latest firmware for the T120 from HP’s support site.
  • Run the update to refresh the controller software. 

Factory Reset.

  • If the screen is accessible after reboot, go to: Setup - Printer Maintenance - Restore Factory Defaults.
  • This clears corrupted settings that may block paper detection.

Printer Driver Settings.

  • Ensure that the settings in the printer driver match the type and size of paper you are using.

Take care and have an amazing day!

 

Did we resolve the issue? If yes, please consider marking this post as "Accepted Solution" and click "Yes" to give us a helpful vote - your feedback keeps us going!

 

Regards

Pallipurath.

I'm an HP Employee.


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